560132-32-3Relevant articles and documents
An experimental and theoretical study of the isomerization of mononuclear bis(arylselenolato)bis(triphenylphosphine)platinum complex [Pt(SeR)2(PPh3)2]
Hannu-Kuure, Milja S.,Komulainen, Jarno,Oilunkaniemi, Raija,Laitnen, Risto S.,Suontamo, Reijo,Ahlgrén, Markku
, p. 111 - 120 (2003)
Mononuclear bis(thienylselenolato)bis(triphenylphosphine)platinum [Pt(SeTh)2(PPh3)2] (Th = 2-thienyl, C4H3S) has been prepared by the treatment of cis -[PtCl2(PPh3)2] with NaSeTh. The 31P-NMR spectroscopic information indicates that cis-[Pt (SeTh)2(PPh3)2] is initially formed in the reaction. Upon prolonged standing in solution it isomerizes to trans- [Pt(SeTh)2(PPh3)2]. The reaction of cis-[PtCl2(PPh3)2] with LiSeFu (Fu = 2-furyl, C4H3O) affords immediately a mixture of cis- and trans-isomers of [Pt(SeFu)2(PPh3)2] with the relative amount of the trans-isomer increasing with time. The recrystallization of the two reaction mixtures yielded cis,anti- and trans,syn-isomers of [Pt(SeTh)2(PPh3)2] as well as cis,syn- and trans,anti-isomers of [Pt(Se-Fu)2(PPh3)2]. Their structures were compared with those of cis,anti - and trans,anti-isomers of [Pt(SePh)2(PPh3)2]. The geometries and relative stabilities of all isomers of [Pt(SeTh)2(PH3)2], [Pt(SeFu)2(PH3)2] and [Pt(SePh)2(PH3)2] were studied by the use of ab initio molecular orbital techniques in order to model the structures and isomerization of the observed mononuclear selenolato complexes.
